linchpin
n
1 pin passed through the end of an axle to keep the wheel in position 轮辖; 制轮楔.
2 (fig 比喻) person or thing that is vital to an organization, plan, etc (组织、 计画等中)关键性的人或事物
Controlling wages is the linchpin of the Government'spolicies. 控制工资是政府政策的关键.
🗣️ 情景例句
I know. I like her.
我知道。我喜欢她。
I don't care what you say.
我不在乎别人怎么说。
The little baskets were empty and the ground was covered with pieces of paper, cigarette ends, old tyres, empty bottles and rusty tins.